Standard Test Method for Measuring Viscosity at High Temperature and High Shear Rate by Tapered-Plug Viscometer

Importancia y uso:

5.1 Viscosity measured under the conditions of this test method is considered to be representative of that at the temperatures and shear rates but not the pressures in the journal bearings of internal combustion engines under operating conditions.

5.2 The relevance of these conditions to the measurement of engine-oil viscosity has been discussed in many publications.6

5.3 The high temperature high shear (HTHS) viscosity at this shear rate can be measured at other temperatures using this apparatus. This is achieved by the use of a different range of Newtonian calibration fluids. The precision has not been studied for any temperature or viscosity range not noted in the precision section.

Subcomité:

D02.07

Referida por:

D4683-20, D6616-21, D4683-20, D5481-21, D5481-21, D4683-20, D4485-22E01, D5481-21, D5481-21

Volúmen:

05.02

Número ICS:

75.100 (Lubricants, industrial oils and related products)

Palabras clave:

dynamic viscosity; high shear viscosity; high temperature; high temperature high shear (HTHS); rotational viscometer ;